SAXSdb — 3std

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1. Protein Identity and Related Structures Protein Identity & Related Structures

PROTEIN (SCYTALONE DEHYDRATASE)

Magnaporthe grisea

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 3	4-(3,3-diphenylpropylamino)cinnoline-3-carbonitrile × 3 CALCIUM ION × 2 water × 3	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	SCYD_MAGGR
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–165； UniProt 1–172 Author chain B； PDBConstruct 1–165； UniProt 1–172 Author chain C； PDBConstruct 1–165； UniProt 1–172

The page prioritizes protein identity, the current assembly, associated components, oligomeric state and cross-PDB links. Chain mapping and sequence ranges are retained as data evidence. Internal IDs, import timestamps and assembly operation expressions are maintenance fields and are not shown here.

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2. Structure Basics 2. Structure Basics

Entry ID entry_id	3std
Deposition date deposition_date	1998-10-16
Structure title title	SCYTALONE DEHYDRATASE AND CYANOCINNOLINE INHIBITOR
Keywords keywords	DEHYDRATASE, FUNGAL MELANIN, EC 4.2.1.94, LYASE; LYASE
Experimental Method method	X-RAY DIFFRACTION

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3. Official assembly/model SAXS Official SAXS Profiles

This page reads only the latest assembly calculations. Every curve maps to an explicit PDB entry, official biological assembly and coordinate model.

3std__assembly_1__model_1

Assembly 1 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

3std__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

3std__assembly_1__model_1 | P(r) · Pending

P(r) will be calculated and displayed separately for the same assembly/model.

Rg（Guinier）	23.19 Å
Rg (electron density)	22.10 Å
Total Rg	23.21 Å
Atom count	4135
Residues	486
Excluded volume	73239 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`3std__assembly_1__model_1`	trimeric （3）	Success	4.1.3-1-20251215 (887e7ef)	View Download

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4. Crystallography and Experiment 4. Crystallography & Experiment

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5. Entities and Polymers Entities & Polymers (4)

Entity 1 Entity 1 polymer

Description description	PROTEIN (SCYTALONE DEHYDRATASE)
Molecular weight formula_weight	19507.1 kDa
EC 编号 ec_number	4.2.1.94
Source method src_method	man
Copy count entity_count	3

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C
Atom count atom_count	4557

MGEITFSDYLGLMTCVYEWADSYDSKDWDRLRKVIAPTLRIDYRSFLDKLWEAMPAEEFVGMVSSKQVLGDPTLRTQHFIGGTRWEKVSEDEVIGYHQLRVPHQRYKDTTMKEVTMKGHAHSANLHWYKKIDGVWKFAGLKPDIRWGEFDFDRIFEDGRETFGDK

Source Source

Source organism organism	Magnaporthe grisea
NCBI taxonomy ID ncbi_taxonomy_id	148305
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 non-polymer

Description description	4-(3,3-diphenylpropylamino)cinnoline-3-carbonitrile
Molecular weight formula_weight	364.4 kDa
Source method src_method	syn
Copy count entity_count	3

Entity 3 Entity 3 non-polymer

Description description	CALCIUM ION
Molecular weight formula_weight	40.1 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 4 Entity 4 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	422

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6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (3 domains)

Domain ID domain_id	d3stda_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.17 — Cystatin-like
Superfamily Superfamily superfamily	d.17.4 — NTF2-like
Family Family family	d.17.4.1 — Scytalone dehydratase

Domain ID domain_id	d3stdb_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.17 — Cystatin-like
Superfamily Superfamily superfamily	d.17.4 — NTF2-like
Family Family family	d.17.4.1 — Scytalone dehydratase

Domain ID domain_id	d3stdc_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.17 — Cystatin-like
Superfamily Superfamily superfamily	d.17.4 — NTF2-like
Family Family family	d.17.4.1 — Scytalone dehydratase

CATH v4.4 (3 domains)

Domain ID domain_id	3stdA00
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	450 — Nuclear Transport Factor 2; Chain: A,
Homologous superfamily homologous superfamily	50 —

Domain ID domain_id	3stdB00
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	450 — Nuclear Transport Factor 2; Chain: A,
Homologous superfamily homologous superfamily	50 —

Domain ID domain_id	3stdC00
Class class	3 — Alpha Beta
Architecture architecture	10 — Roll
Topology topology	450 — Nuclear Transport Factor 2; Chain: A,
Homologous superfamily homologous superfamily	50 —

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Unit-cell length a length_a	80.230 Å
Unit-cell length b length_b	90.260 Å
Unit-cell length c length_c	162.140 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	90.00 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	24

Space group space_group	I 2 2 2
Space-group number int_tables_number	23
Crystal system crystal_system	—

Resolution resolution	1.650 Å
Low-resolution limit resolution_low	8.000 Å
R factor r_factor	0.1940
R_work r_work	0.1940
R_free r_free	0.2300

SCYTALONE DEHYDRATASE AND CYANOCINNOLINE INHIBITOR

1. Protein Identity and Related Structures Protein Identity & Related Structures

PROTEIN (SCYTALONE DEHYDRATASE)

State in the Current Structure

Other States of the Same Protein in the Database

2. Structure Basics 2. Structure Basics

3. Official assembly/model SAXS Official SAXS Profiles

3std__assembly_1__model_1

3std__assembly_1__model_1 | I(q)

3std__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

Diffraction experiment Diffraction

5. Entities and Polymers Entities & Polymers (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 water

6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (3 domains)

CATH v4.4 (3 domains)

7. Citations (1)

SCYTALONE DEHYDRATASE AND CYANOCINNOLINE INHIBITOR

1. Protein Identity and Related Structures Protein Identity & Related Structures

PROTEIN (SCYTALONE DEHYDRATASE)

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

2. Structure Basics 2. Structure Basics

3. Official assembly/model SAXS Official SAXS Profiles

3std__assembly_1__model_1

3std__assembly_1__model_1 | I(q)

3std__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

Diffraction experiment Diffraction

5. Entities and Polymers Entities & Polymers (4)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 water

6. Fold Classification (SCOP + CATH) 6 domains

SCOP 2.08 (3 domains)

CATH v4.4 (3 domains)

7. Citations (1)